LA Cemetery

Each gravestone solves to a phrase that implies a letter. From left to right, top to
bottom, they are:

Constant for Gravity: G
Rusty creaking: E
Earl Grey: T
Marks the spot: X
Child's question: Y

Personal Pronoun 1: I
Antonym of out: N
Filler in Vancouver: A
Honey maker: B
Salty waters: C

Oxygen: O
Buccaneer Shout: R
Day of Omaha Landing: D
British line: Q
Nudey bird: J

Element one: H
Failing grade: F
Urination: P
Pair of sheep chicks: W
Personal Pronoun 2: U

T-shirt neckline: V
Calvin degrees: K
The widest dash in fonts: M
Curvy roads: S
Girl, in France: L

A clue is written across the gravestones when you look at the letters: get xy in abc ord.

This implies that the gravestones are a coordinate plane. Each gravestone has a
coordinate on it. Using the coordinates on the gravestones in alphabetical order, index
into the coordinate plane (with origin in the bottom left) to get a series of letters that
spell "Name of hat worn by Lincoln". The answer is: STOVEPIPE